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il <br /> i r �-i iI f=TG�� il I TEL I4 i:�L�� ; ,_-"�-'l l u578 FOa -.__— <br /> _. Iliv�-p�-�.�,:'� TNU 1'��.J'1 II�:F-"�S._T id-'_.,7 ..�,� <br /> � � Mr. Henk Lewis <br /> �� October 31 , 19B9 <br /> q Page Three <br /> � <br />, � H <br /> 5� AlthoupB bgypnd r priQin�� scove of work� �t 16 reCvmnended thn: a larer <br /> o��� of 6 inch batt , • ''.on be placed between party floors. <br /> ti <br /> i ��� 6. The RG-1 chennel between floors should be USG pC-1 Channel . Accopt no <br /> I °�y �g substitutes. <br />� �" <br /> y ln re9ard to nolse icvels nt the 9round floor Pntios vf the narth butldinv� we <br /> I� gy hnve beon advlsed by the Snohomtsh County Planning Depertment that noisc <br /> ��� levels due Lo treffic on SR 526 may not exteed a Leq of 60 dB. Thts 1s <br /> � based on e Lelephone conversatlon wlth Mr. Steve Ingelsve, of the Snohomtsh <br /> I� ��y County Planning Departrnent, that took place on Juty 7, 1989. <br />'I In ordar to achieve tha Leq 60 d0 11mit, it wili 6e necessary Lo �r�ct a <br /> berr1er 12 feat hiqh extendtnp fran Lhe northeast cornar to the northwest <br /> I C� corner of the north building, and en additional 10 feet to the south at both <br /> endf. The barrier should weigh at least 4 pounds per squere foot end heve no <br />�i ' gaps or openings, including along thc ground. Acceptable meterlals 1nclude <br /> I �� wo0d of sufflcient thlckness, masonry, or concrete. <br /> il <br /> I M alternative to the constru�tion of the barrier descrlbed ebove would be to <br />� rotate the north butldin9 180 degrees So thet Lh@ patlos fece south rether <br /> I �� <br />��� thnn north. This would result in acceptable noise levels on the paN oa for <br /> all LAree floors wlth no additional noise reductlon measures. The berrler <br /> � <br /> � would still be requlred, however, if the grassy area betNeen the north <br /> bullding and the property were accesstbte to resldents for plcy or <br /> reCraetlonel use. A chein link, or other suitable type of fence, extending <br /> � north wo <br /> uld make this area ineccessible to residents and thus, e11m1nate the <br /> need for a noise barrter. A locked gete could be installed to allow <br />� melntenence of the erea., <br /> lbwn� Rleherdt d Cheudlere Inc, <br /> CMW�qnl!�� ��e�tl �braUx+ <br /> i.,,e, .,: :� . . <br /> i ..._. '__ --'—_- _' _ _ . <br />